Starting device for explosion-engines.



N0. 852,557. PATENTED MAY 7, 1907. N. T. HARRINGTON.

STARTING DEVICE-FOR EXPLOSION ENGINES.

APPLICATION I-ILED MAR.21.1904. I

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N. T. HARRINGTON. STARTI)NG DEVICE FOR EXPLOSION ENGINES.

APPLIOATION FILED MAR.21,1904.

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No. 852,557. v PATENTED MAY 7. 1907.

N..T-. HARRINGTON.

STARTING DEVICE FOR. EXPLOSION ENGINES.

APPLICATION FILED MAE.21,1904.

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NORMAN T. HARRINGTON, OF DETROIT, MICHIGAN, ASSIGNOR TO OLDS MOTOR'WORKS, OF DETROIT, MICHIGAN, A CORPORATION OF-MIOHIGAN.

STARTING DEVIQE Fon VEXPLOSIONI-V-ENGINES.

' Specification of Letters Patent.

Patented May 7, 1907.

Application filed March 21, 1904:. Serial No. 199,246.

To all whom it may concern:

. Devices for Explosion-Engines, of which the following is a specification, reference being.

had therein to the accompanying drawings.

The invention relates to motor vehicles and has reference to certain features of construction of the starting mechanism and associated controlling devices, and consists in the eculiar a construction, arrangement, and com ination of parts as hereinafter set forth. In the drawings, Figure 1 is a plan view; Fig. 2 is a pers ective view of the starting mechanism; an Fig. 3 is an elevation partly in section of the starting mechanism and controlling devices. Fig. 4 is a bottom-plan view; and Fig. 5 is a side elevation showing the exhaust valve shifting and operating I mechanism.

The frame of the vehicle comprises the parallel side bars A and the cross bars O, D andE connectingthe side bars at points intermediate their ends. 1

tween the cross bars D and -E secured thereto.

A starting mechanism is provided referf-ably comprising the sprocket wheel T aving a ratchet engagement with the crank shaft N near the end thereof. This sprocket wheel is connected by the chain, T with the s rocket T secured to a starting shaft T clatter is preferably j ournaled in a bracket T mounted upon the side bar A of theframe in roximity to the cross bar-D thereof, and T is adetachable starting crank which is adapted to engage with a socket formed in the outer end of the starting shaft T, the arrangement being such that when the crank is engaged with the shaft the latter ma be rotated and through the sprocket an chain connection will impart an initial rotary movement to the crank shaft N.

It is. usual in the construction of engines for motor vehicles to' provide means for changing the timing of the sparker or igniter mechanism so that when the engine is'in full operation an earlier explosionimay be given.

It is, however, necessary after the engine has stopped that the sparker should be read- F is the engine frame which extends be-' and is rigidly-- justed before again starting the engine, as

otherwise there would be danger of back firing andof seriously injuring the operator.

by the backward kick given to the starting crank. To avoid this difiiculty I have provided means for compelling the retarding of the sparking, that is, the adjustment of the sparking mechanism so as to ,delay the time of explosion before the starting mechanism for the en ine can be operated. In the o0n-- struction s own, this is effected by roviding the guardU which may be adjuste to cover the socket in the end 'of the starting shaft T therewith. This guard U is referably triangular in form with the guard angle U and with a circular opening at the angle U for the passage of-the starting crank and the trian le is connected at the proper at the third angle to a roc shaft 'U journaled in bearings which are formed integral with the bracket T The side of theguard between the angle U and the annular portion U swings when rocked on the rock shaft U through an are which covers the'socket in the end of the shaft 'T and, conse uently,

access to said socket may be had on y when the guard is in the position shown in Fig. 2, when the opening in the annular p ortion'U uncovers said socket. The rock shaft U is connected by a system of rods and levers to the sparker or circuit closer V upon the valve shaft V of the engine. The circuit closer has its-adjustable mem'bersleeved u on the shaft V and is connected by a link 2 to the rock arm V on the rock shaft V The opposite end of said rock shaft is provided with the rock arm V? which is connected by an actuating rod V with the bell crank lever V fulcrumedu on the cross bar O. The bell crank lever Pin turn is connected by a rod V with a rock arm V attached to the shaft .U'.- Thus the rocking ofthe shaft U which occurs whenever the guard U is adjusted in position will transmit its movement through the connections described, to, the circuit closer V and adjust the latter so as to change the time of ignition. Whenever-the guard. U'jis so ad'usted as to uncover the socket in the shaft 'l to permit of the-engagement of IOO the crank T the circuit closerV Will be 'adjusted to delay the ignition, so as to'prevent 'all ossibility'of backfirinn addition to. the adjustment of the sparker, it is necessary before starting the en- 1- :upon said shaft as gine torelieve the compression so that the operator may be enabled. to revolve the starting crank.- This is automatically accomplished' by a second connection to the rock shaft U comprisfithe rock arm U thereon connected by a'l U with a lever U ful crumed upon the engine casing. U is a rod connected to the opposite end 'of the lever U? preferably throughthe'medi'um of a spring U and the opposite -end of said rod is attached to the exhaust valve operatinglever U being adapted to shift said lever from its normal positionjwhere it co-operate's with the exhaust cam U on' the shaft V to a position where it will engage with the relief'cam-U During the operation of the motor vehicle it is desirable tohave the sparker underthe control of the operator and it is usual to place the controlling mechanism therefor in a convenient position for operation, as for instance in association with the steering mechanism. In the present construction I have shown'a controlling device V? comprising a lever and sector which may be carried on the steering column. Said lever is secured to a rock shaft bearing a rock arm pivotally engaging,

the end of the rod V. As this is but one of the many forms of controlling devices well known to those skilled in the art, I have simply shown it in conventionalized formin Fig. 1-. The operator may therefore adjust the sparkerat any time through the medium of the rod V instead: of actuating it by adjusting the guard U. Such an operation will howevershiftthe guard U so as to close the socket for the starting point. whenever the.

sparker is adjusted for early ignition, but any,

danger in starting the engine is avoided.

By reason of the slip connection between the collar V and V", the operator after starting the engine may immediately move the guard plate back so as to shift the exhaust valve lever again into engagement with the normal 1 exhaust cam, and out of engagement with the relief cam, this being accomplished with: out shifting the sp'arker,,by reason off-the slip connection above mentioned. Thisshifting of the guard plate is preferably accom v lished automatically by means of a spring 13 as soon as the o erator withdraws the- -startingcrar1k from t e socket; This spring well as saidexhaust V is secured at one end to the cross bar C and at the other end to the rock arm V and thus acts to draw, the rock arm V" and rock the shaft U, to which the guard plate is secured. The rocking of this shaft swings rook arm U and retracts the lever U through the link U This releasesthe rod U and thus permits the shiftin of the exhaust valve lever by the spring 1?.

. What I'claim as my invention is, i 1. The combination with a ,motor, a startin mechanism adapted to receive a detachab e crank, and an adjustable controlling device, of a guard for reven'ting the engagement .of said crank wit the said starting mechanism, a connection betweensaid guar and said adjustable controlling device whereby the removal of said guard will adjust the controlling device suitably for the initial op 7 eration of the motor and means whereby the guard is automatically returned when the crank 1s detached from the starting mechan- 1sm.

justable controllin device, and starting mechanism adapte to receive a detachable crank, a guard for preventing the engagement of said crank with the starting mech .anism, and connections between said guard and motor controllin device whereby the removal of said guard adjusts said controla ling device suitably forthe'initial operation of the motor, and means whereby the guard is automatically returned independently of the controlling device when the said crank 2'. The combination with a motor, an adis detached from said starting mechanism.

3. 1 The combination with a motor, an adjustable controlling device, a starting mechanism adapted to receive a detachablecrank,

and a compression relief, of a guard for preventingtheengagement of said crank vwith the starting mechanism, connections between said guard and themotor controlling device, whereby theremoval of the guard will adjust the controlling device and compression relief, suitably for the initial oper-' ation of the motor and means automatically I returning said guard and re-adjustin ,Sfiid.

compression relief when" the crank is de tached from the starting mechanism. 4. The combination with a motor, a starting mechanism adapted to receive a detach able'crank, an adjustable controlling device, a compression relief, and a guard-for prcventing the. engagement of said crank uzi tlr the said starting mechanism, 'of connections betweenthe guard, t'l'ie oi-mtrollmg device,

and the compression relief; wheroliy 1;] no removal of the iguardv adjusts the controlling device and. the coin pressioii= rel-ivl suitably for the initial operal ion of the motor, and means whereby the guard l5 autoimttlcally returned and the compression relief is automatically re-adjustcd when the crankis detached, and the said connections beingsuch that further adjustment of the controlling device is by the operator and is independent of the compression relief.

5. The combination with a motor, a start- 5 ing mechanism adapted to receive a detachable crank, an adjustable controlling device, and a guard for preventing the engagement of said crank with the starting mechanism,

of the rock shaft V, the rock arm V, the

IQ rod V, the spring V the bell crank lever V", the actuating rod V the rock arm V,

the rock shaft V, the rock arm V and the rod V substantially as described.

6. The combination with a motor, a start-- i 1 5 ing mechanism adapted to receive a detachable crank, an adjustable controlling device, a guard for preventing the engagement of said crank with said starting mechanism, and, connections between said guard and said controlling device substantially as described, 20 of a rock shaft U, the rock arm U the link U, the lever U, the rod U", the springU,

the exhaust valve operating lever U and the relief cam U substantially as described.

. In testimonywhereof I affix my'signature 25 in presence of two witnesses.

NORMAN T. HARRINGTON. Witnesses:

' JAs. P. BARRY, H. 0. SMITH. 

